Addition and Subtraction with Rational Numbers

3 + -7

• 10
• 4
• -10
• -4

-14 + (-3)

• -17
• 11
• -11
• 17

-22 + (-9)

• -11
• -31
• 11
• 31

A diver was 40 feet below the surface of the water. A fisherman was casting off a dock right above the diver that was 12 feet above the surface of the water. How far apart are the diver and the fisherman?

• 28 feet
• -28 feet
• 52 feet
• -52 feet

At 2pm, the temperature was 15 degrees. By midnight, the temperature dropped by 30 degrees. What is the temperature at midnight?

• 45 degrees
• -45 degrees
• 15 degrees
• -15 degrees

45 + (-12)

• 33
• -33
• 57
• -57

-6.5 + (-0.5) 

• -7
• 7
• 6
• -6

34.5 + (-7)

• -41.5
• 41.5
• -27.5
• 27.5

-7.8 + (-0.8)

• 8.6
• -8.6
• 7
• -7

⅗+(−⅕)=

• ⅖
• −⅖
• ⅘